This is a Thrash Metal band from Texas (there are / were namely more bands with this name). You can hear it in the music too, is saying, here is music at a high technical level, without having to be called progressive. No, just well played Thrash Metal with great riffs and solos, driving rhythm and good songs. Only the singing is a little monotonous and falls due to the positive instrumentation slightly negative consequence. However, you should definitely listen times.